Resilient bottom



Dec. 6, 1932. KRONHEIM 1,890,089

RESILIENT BOTTOM Filed Feb. 27,1930 2 Sheets-Sheet 1 H INVENTOR 1/9005kkmvHE/M ATTORNEY Dec. 6, 1932. J. KRONHEIM RESILI'ENT BOTTOM Filed Feb.27; 1930 2. sneetsa'sneet 2 INVENTOR J'lrz'oa KRONHE/M ATTORNEY PatentedDec. 6, 1932 PA'IEN'D OFFICE moon KBONHEIM, or CLEVELAND, 01110RESILIENT BOTTOM Application filed February 27, 1930. Serial No.431,781.

My invention relates to resilient bottoms for chairs, couches, andsimilar upholstered furniture, and my object in generalflis to providesimple and eflicient means for constructing and installing such. bottomswith expedition and dispatch and with a material saving in time andlabor as compared with customary practices. Thus, in the accompanyingdrawings I show the invention applied to a chair or'couch seat, Fig. 1rep: resenting aplan view of the device, partly in section; Fig. 2showing a front elevation or edge view projected from Fig. 1; Fig. 3 avertical cross section on line 8-8 of Fig. 1;

and Fig. 1 is an enlarged sectional view of :1 portion of the seatsecured removably within the frame of a chair or couch.

Fig. 5, Sheet 2, is a sectional view of a chair or couch seat embodyinga modified form of the invention, and Fig. 6 is a perspective view on alarger scale of a portion of the rail and wire members shown in Fig. 5.Fig. 7 is a perspective view corresponding to Fig. 6. showing a furthermodification, and Fig. 8 is an enlarged perspective view of one of thewire members used in the seat shown in Figs. 1 to 4. The presentimprovement resides largely in the particular means employed forsuspending a flexible bottom member A by means of coiled springsB withinan angularly-sided open frame C. This open frame may be a fixed part ofa piece of furniture, such as a chair or couch, or it may be a removablepart thereof, such as a removable seat mounted within or upon anotherframe having supporting feet or legs. In either case, the open frame Ccomprises four angularlyrelated rails 2, each having openings or slotsbored transversely therethrough at spaced intervals lengthwise of therail. Preferably, the outer face of each rail or side member 2 is alsoprovided with a longitudinal groove or channel l in communication withor open to the outer ends of the slots or openings 3. Thus, the groovesor channels 4: have a plurality of transverse openings or slotsextendingtherefrom through the rail or side member to the inside facethereof, wherein a suitable tie member D made of wire maybe inserted andfixedly confined. The main body of this tie member D is straight and'ofa length corresponding to the groove in the rail and it has relativelylong branches or loops 5 bent or formed therefrom. atright V angles andat equi-distant places therein. The lateral branches or loops 5correspond in spacing to the openings or slots 3 in the rails so thatthey may be jointly introduced therein and caused to projecttherethrough at their eye or loop ends 6 where doubled back on parallellines. Only the eye or loop end 6 remains exposed on one side of therail when the straight body of the tiemember is seated within thelongitudinal groove 4 on the other side. In some cases, a separatemolding strip 7 is affixed to the outer face of rail 2 to cover thegroove and wire body, but if desired these parts may be covered andconcealed by the upholstering material only when it is tacked in place.

No special means need be employed to fasten the tie member D to therail, inasmuch as the coiled springs B are hooked to theloop ends oreyes 6 of this element while it is confined within the rail, and becausethe springs are always under tension when connected to the flexiblebottom A which is stretched taut by the springs. Accordingly, it is asimple matter to assemble a seating structure such as described, theoperations merely consisting in slipping four of the wire elements Dinto the four rails, and then hooking the springs to the protrudingeyes'6, and connecting the flexible bottom member A to.the springs, orif the springs are first attached to the bottom member, then the springsare connected to the eyes 6.

The assembled parts may now be padded and upholstered, either separatelyon frame C, or after all said parts are mounted within an independentchair or couch frame.

In Figs. 5 to 7, Ishow a modification of the'invention which is. ofespecial utility in producing a chair or couch seat having a bank orgroup of compression springs E built up on and supported by flexiblebottom member A. Such springs are usually placed under tension beforeupholstering by tying them together and to the frame by means of hempcords F, and to facilitate that operation a tie member D may be employedhaving all the characteristics and features already described, togetherwith a second series of 5 branches or loops 5 formed from the main bodyof the Wire but in a plane at right angles to the first set of branchesor loops 5. Agreater number of the secondary loops 5 may be employed andthese extend vertically or upright in respect to frame C and loops 5,and their respective eyes or loop ends 6 protrude and are exposed abovethe top surface of the rails Where the cords F may be readily threadedthrough them or tied thereto, as shown in 5 Fig. 5. In Fig. 6, a singlerelatively long up right looped branch 5 is formed 'between eachsucceeding pair of horizontal loops 5, thus disclosing that tie elementD may be fashioned in various Ways Without departing materially from theconcept and invention described and shown herein.

lVhat I claim, is: 1 1. In a structure as described, a frame having aside rail formed with transverse openings, in combination with aseparate tie member of elongated form provided at intervals withvertically extending branches, the main body of said tie member beingseated in anchoring relation against the outer side of said railopposite the transverse openings therein, helical springs connected tosaid tie member at the openings in said rail, a flexible bottomconnected to and held under tension by said springs, compression springsseated upon said flexible bottom, and means tying said springs to thevertical branches of said tie member.

2. In a structure as described, a frame having a rail provided withopenings at spaced 4o intervals. and a tie member havingbranchesatspaced intervals adapted to extend through said openings and alsohaving a series of branches extending at an angle to said first branchesand adjacent one side of said rail.

4 3. In a structure as described, an open frame having a rail formedwith a series of transverse openings, and a tie. member having loopportions extending through said openings and other loop portionsprojecting at right angles to the plane of said first loops.

In testimony whereof I allix my signature.

JACOB KRo'NHnrM.

